A K-OP-A chain of optical sensors can integrate in a single optical fiber both, OL-WA linear weldable gauges, well-suited for high-strain applications, and OR-WA weldablerosettes, which measure strain at different points and directions.

In addition, OL-WA linear gauges can be used for temperature compensation of other optical strain sensors. The only requirement is to weld them to a steel body (OTC-WA-Plate) that can be ordered together with the sensor.

For spot welding, the Heller c30 Impulse Welding Device is recommended (not available in the US).